Printed-wrapper-controlling device for wrapping machines



Feb. 3, 1931. w, RANNEY ET AL 1,791,144

PRINTED WRAPPER CONTROLLING DEVICE FOR WRAPPING MACHINES Filed July 8, 1929 3 Sheets-Sheet l h haven 60x15; 71" ([0175. Ewe/ow Yak/Less: mjnj R19 26 20 Z1 Z2.

Feb. 3, 1931.

W. B. RANNEY ET AL Filed July 8, 1929 5 Sheets-Sheet 3 Feb. 3, 1931.

w. B. RANNEY ET AL 4 PRINTED WRAPPER CONTROLLING DEVICE FOR WRAPPING MACHINES Filed July 8, 1929 5 Sheets-Sheet 2 mzlmlkfokwso7v, WM MM Patented Feb. 3, 1931 UNITED STATES PATENT OFFICE WILLET B. BANNEY, OF CHICAGO, AND ARTHUR E. JOHI NSON, OF OAK PARK, ILLINOIS,

ASSIGNORS TO WM. WBIGLEY JR. COMPANY, OF CHICAGO, ILLHVOIS. A CORPORA- TION OF DELAWARE PR INTED-WRAIPER-CONTROLLING DEVICE FOR WRAPPING MACHINES Application filed July 8,

to invention will be more clearly understood from the following. In the merchandising of packaged confections, such as chewing gum, it has been the practice to pack the goods in small boxes or cartons of a convenient size for handling and distribution to the retail trade, and further, to wrap and seal these cartons or boxes in heavy wax paper in order to preserve the freshness of the product and prevent deterioration under varying climatic conditions. v

The operation of wrapping the carton is carried on by automatic machines, to which the waxed paper is fed continuously from rolls, cut into sheets and folded aboutthe' cartons. The wrapping operation, therefore, presents no problem, providing plainunprinted wrappers are used or wrappers having an all-over design such as used in the wrapping of bread and other foods or confections requiring protection against moisture. The use of a plain wrapper is objectionable, on the one hand, because being more or less opaque, it is quite diflicult to discern the marking on the cartons through the wrapper, with the result that identification of the product becomes increasingly uncertain, particularly in the hands of the.

jobber and retailer. Anall-over design is, on the other hand, not altogether satisfactory because it detracts from the appearance of the package. I

The most desirable method is, therefore, to print the advertising or identifying matter upon the wrappers in the form of panels grouped to conform'with the faces of the cartons, and then apply them so that there is a perfect registration of the printed panels with the rectangular surfaces of the-cartons.

The diificulty of accomplishing this result will be appreciated from the following brief '1929. Serial no. 376,590.

discussion of the several factors to be contended with: In the first place, the paper or other wrapping material must be fed to the wrapping machine from rolls, that is, in the form of a continuous web on which the groups of printed panels are repeated in close proximity. As the web leaves the roll, it is cut into the individual wrappers and then fed into the wrapping mechanism proper. True and accurate registration is there dependent primarily upon the cutting of the web along lines bearing the same relation to the printed panels and without variation. As is the case in most machines, the cutting mechanism is synchronized with the wrapping mechanism and therefore the time interval between cutting operations is a constant factor. The uncertain or variable factor is in the paper itself, due to certain alterations during the printing and processing, with the result that the web may stretch or contract, so that the slightest error or offset of the line of cutting between printed impressions almost immediately destroys the possibility of registration. Moreover, the error is accumulative so that the line of cut may creep in one direction or the other and is quite impossible to control unless positive means are provided for. definitely locating each individual sheet or panelled printed wrapper immediately before it is severed from the roll and thence fed into the machine.

The device herein disclosed makes possible the perfect registration of the wrappers and cartons in the machine, although it involves the use of a paper that has been especially processed to be handled thereby, which consists generally in providing it with mechanical aids, such as marginal perforations punched therein simultaneously with the printing operation, so that they bear a definite and unvarying relation to each printed 'impression.

A preferred embodiment of. the invention is shown in the accompanying drawings, in which Figure 1 is a general view in side elevation of the device as applied to paper feeding end of a standard package-wrapping machine.

Figure 2 is a perspective top plan view of the machine. 7

Figure 3 is an enlarged detail view in vertical longitudinal section through the machine, as taken on line 33 of Figure 2.

Figure 4.- is an enlarged detail view of the positioning and cutting rolls immediately before the web is cut to form a single wrapper.

Figure 5 is a similar view of the same parts advanced to the point immediately after the cutting operation.

Figure 6 is a perspective View of an unsevered portion of the web between the positioning and cutting rolls, as in Figure 4:.

Figure 6a is a detail view showing a modified form of pins and slots.

Figure 7 is a similar view of the web of paper just after. it has been cut, as in Figure 5; and

Figure 8 is a perspective view of a single wrapper after it has been cut and about to be fed into the wrapping machine.

In order to locate the controlling device relative to the wrapping machine of which it forms a part, it may be assumed that it is located at one side and adjacent the feeding end. More specifically, it is positioned with its discharge end opposite and at the level of a rapidly moving conveyor belt A, which receives the wrappers immediately after they are cut and conveys them edgewise into the wrapping mechanism. Beyond this transfer belt, it is not thought necessary to show any of the wrapping mechanism since the controlling, device may be regarded as a separate unit, and as such is mounted in a separate frame, consisting of side frame members 1, 1 having legs 2, 2 resting on the floor and supporting said'side frame members in a horizontal position at table height. Extending downwardly from the front ends of the side frame members and joining the legs 2, 2 are angle members 3, 3 which support between them a roll B of the printed wax paper, which will later be described more in detail. The paper is mounted on a mandrel 4 extending between the lower horizontal portions of the angle members-3, 3 from which the continuous web I) is fed upwardly and between a pair of feed rolls 5 and 6 at the forward end of the device. From the feed rolls 5 and 6 the web 6 passes downwardly beneath a tension rod 7 and thence upwardly again to a pair of controlling or positioning rolls 8 and 9, located substantially between the ends of the frame members 11, the web making a V-shaped loop between said feed and positioning rolls 5, 6 and 8, 9. The web passes between the positioning rolls and thence in a straight line to and between a pair 1 of cutting rolls 10 and 11 located at the rear finii (X the frame adjacent the wrapper feed The several pairs of rolls thus identified magma .ticall'y adjustable bearings consisting of bearing blocks 12 mounted in guideways 13 formed in the side frame members 1, 1 with coil springs 14 bearing upon the blocks, the tension of these springs being varied by means of sets of adjusting screws 15 above each bearing. As will be presently seen these particular rolls 6 and 9 are adapted to be shifted to and from their respective lower rolls 5 and 8 during the op eration of the machine.

The rolls of each pair are connected by gear wheels mounted on the ends of their respective shaft ends, which are extended through the side frame members at one side of the machine, so that they turn in opposite directions at uniform speeds and in a direction to advance the web from left to right. Likewise, each set of rolls is driven through a sprocket chain engaging sprocket wheels mounted on the extended shaft of the lower rolls of each pair. Thus, the lower feed roll 5 carries a gear wheel 17 on its extended stub shaft which meshes with a gear wheel 18 on the shaft of the upper feed roll 6, these gear wheels hearing the same ratio as the diameter of their respective rolls. The lower feed roll 5 also carries a sprocket wheel 19. Similarly, the positioning rolls 8 and 9 carry meshing gear wheels 20 and 21, respectively, while the lower positioning roll 8 carries an additional sprocket wheel 22. The cutter rolls 10 and 11 have gear wheels 23 and 24:, with a sprocket wheel 25 on the shaft end of the lower cutter roll 10. A sprocket chain 26 drives all of the lower rolls through the several sprocket wheels 19, 22 and 25 while one of these rolls serves as the driving roll, as for instance, the lower feed roll 5 which has its shaft extended as at 5?) from the opposite side of the machine andv operatively connected with any suitable source of power, such as a motor or a chain drive from the wrapping machine.

Referring more in detail to the feed rolls, the lower roll 5 is substantially twice the diameter of the upper roll 6 and is of metal, while the upper roll is preferably of cork as it provides a resilient surface and the paraffine from the paper does not adhere thereto. Normally, therefore, the web I) of paper from the roll B passes partly around the lower feed roll and beneath the upper feed roll, the pressure of the latter insuring the uniform feeding of the paper without slippage. On leaving the feed rolls, the web 6 passes around the tension rod 7, which is suspended and thus the web forms a V-' shaped loop between the feed and positioning rolls. The ends of the tension rod 7 are secured to a pair of levers 27, 27 pivoted to the inner faces of the side frame members 1, 1 at 27a just beneath the lower feed roll 5. Each lever has a very short armbeyond its pivotal points which bears upwardly against the lower end of a vertical presser bar 28 slidably mounted on the inner face of the side frame just ahead of the lower feed rolls and having a horizontal arm at its upper end extending beneath the ends of the upper feed roller shaft 611. The purpose of this tension bar-7 and'presser bars 28 is to adjust the tension exerted by the upper feed roll 6 on the web of paper, so as to obtain proper feeding of the paper to the positioning rolls beyond. Thus, if the feed is not fast enough the V-loop tends to approach a straight line, gradually lifting the tension rod, which in turn depresses the bars 28, 28 thus allowing the upper roll 6 to bear with greater force against the lower roll, thereby eliminating the slippage of the paper due to the backward pull on the web as it is unwound from -its roll B. On the other hand, should the feed be too fast, the V-loop wouldbe increased in depth allowing the tension rod to drop, thereby lifting the bars 28, 28 and permitting the web to remain stationary until the slack is taken up by the positioning rolls and the feed is restored to normal.

The positioning rolls 8 and 9 are somewhat similar to the feed rolls in size and construction, the lower roll being of metal and the upper roll of cork; Moreover, for reasons hereinafter to be pointed out, the diameter of the lower positioning roll8 is just a fraction of an inch greater than the lower feed roll 5, that is, assuming the former is, say 2.7 inches in diameter, the latter is 2.6 inches, or a difference of of an inch. The lower positioning roll has a pair of pins or lugs 29 projecting from its surface, one of said pins being located inwardly from each end and on the same line longitudinally of the roll. The distance between these pins is slightly less than the width of the web of pa per, and, as will be presently seen, is adapted to register with marginal perforations in the web. The lower positioning roll also has at each end and beyond the pins 29, a cam 30, each consisting of a radial flange of greater diameter than the roll and concentric with the axis of the ro l, except throughout sectors extending on either side of the circumferen-' tial position of the pins 29, 29. Thus approaching the pins in a counter-clockwise direction (Figure 3) the cams have an eccentric edge 30a of increasing radius extending to a tinuing on some distance beyond the pins.

As thus formed, the cams 30, 30 are adapted to have contact with the ends of the upper roll shaft 9a, so that as the pins 29 approach the top of the roll which turns in a clockwise direction, the cams-gradually lift the upper roll against the tension of the bearing springs 14 and out of contact with the lower roll, and immediately after the pins have passed beyond their vertical upright position, the cams release the upper roll permitting it to drop into contact with the lower roll, with slightly increased pressure for an instant due to the falling away of the cam just beyond the radial shoulder 30?).

The pins 29, 29 (Figure 6) are preferably pointed or tooth-shaped, that is, beveled on both sides and at front and rear so as to facilitate the pins entering and leaving the perforations without tearing the paper. The upper positioning roll 9 has circumferential grooves or channels 96, 9b which register with projecting ends of the pins 29, 29.

The cutting rolls 10 and 11 are spaced beyond the positioning rolls a distance slightly less than the length of the sheets or wrappers to be cut from the web, one wrapper being cut with each revolution 'of these cutting rolls. The lower roll 10 is primarily a supporting roll for the paper as it is being cut,

and except for a longitudinal groove lOa'in its face. is a plain roll. The upper and cutting roll is keyed to a shaft 11a journalled at its ends in the side frame members '1, l and consists of a sleeve 31 having a series of integral disc-like webs 31b spaced apart throughoutits ,length. Extending longitudinally of the sleeve and integral with the circular webs 31a are two diametrically disposed radial webs 31b and 310, the former terminating flush with the peripheries of the circular webs 31a. and the latter having a flanged edge 31d forming a mounting for a cutting blade 32, the same being set edgewise in-a radial slot in said flange with its cutting edge (preferably consisting of saw teeth) projecting beyond the circumference of the roll. The portion of the flange 31d in front of the blade 32 is slightly extended beyond the circumference of the roll, as shown at 33 in Figure 2. and forms a bearing sector which acts to grip the web of paper immediately in advance of the cutting operaward the cutting rolls. Extending transversely across the top of the bar are a series on either side and lying just below the web of paper as. it leaves one and enters the other pair of rolls.

The lower positioning roll 8 is equipped with a scraper in the form of a vertical blade 37 supported upon a bracket 37a secured to the machine frame by means of adjusting screws 38, 38. against the-roll and scrapes ofi any pa'raffine that may adhere to its surface.

The operation of the device will now be described with reference, first, to the paper which is especially prepared for use on the machine. As shown in Figures 4 and 5, the web 6 as it is unrolled has groups of panels printed thereon in close succession, each group being a repetition of the next, and representing the spaces containing the printed'matter to be applied in uniform register to the'top, slde and end faces of the cartons to' be has been impregnated with parafiine.

with slots or perforations wrapped. Thus a single group of panels incllides'a large central panel 6 located midway between the edges of the web, two narrow panels I), D along the opposite sides of the central panel but spaced some distance inwardlyfrom the edges of the web, and two short narrow panels E, E adjacent the other opposite sides of the central panel. These groups of'panels. are arranged symmetrically with respect to each'wrapper, so that in the wrapping operation the central panel C re isters with thetop of the carton, the si e panels D, D with the sides of the carton, and the end panels with the ends of the box. The groups of panels being repeated in close succession, there is but a narrow blank space between groups so that the line of cutting must fall approximately midway between the pairs of adjacent end panels E, E of each successive P- The processing of the paper consists generally of printing'the impressions on the distortion with the result that while the printed impressions may be accurately spaced when the paper leaves the press, there is no assurance that this will be so after the aper s an aid in correcting orcompensating for this factor of uncertainty, the paper is rovided F w ich are punched at intervals along the margin of the web at the same time the impressions are made, i. e., during the passage of the paper through the printing press, with the result that the relative position of perforations to impressions is fixed and constant. Althou h the location of the perforations may %e varied, they. are shown in closeproximity to the approximate line of cutting and near This blade bears lightly memes the side edges of the web so that in the wrapping of the. carton they will be included in the folded end flaps. And finally, the size and. shape of the perforations is dependent upon the shape of the pins 29, 29 being elongated longitudinally so that. their length exceeds the diameter of the pins, and sufficiently greater in width soithat any slight error in the feeding of the web will not throw the pins out of register therewith as the web is advanced.

In this connection it may be observed that the slots or perforations may be cut V-shaped at their forward ends instead of rounded, and the pins shaped with a distinct wedge shaped forward ege, as clearly shown in Figure 6a. Such an arrangement would aid in overcoming any tendency of the paper to weave from side to side as it is fed to the positioning rolls, inasmuch as the V-edge of the pins would tend to register with the V-notch at the ends of the slots, thereby shifting the web laterally at the same instant that the backward slippage takes place, thussimultaneously correcting any slight errors in a transverse direction.

Referring now to Figures 3 to 7, the machine feeds, positions and cuts the paper in the following manner: As already stated, the web I) of waxed paper is fed from the roll B to the feed rolls 5 and 6, and thence to the positioning rolls '8 and 9, passing below the tension rod 7 which regulates the feed in the manner already explained and keeps the web in a taut condition- It should be further explained that there is a fixed or constant relation between the circumference of the lower positioning roll 8 and the distance between the pairs of perforations F, F in the web, namely, this The circumference of the roll is slightly greater than the longitudinal distance between su'ccessive pairs of perforations, that is, from say, the forward ends of one pair of perforations to the forward ends of the following pair, this difference being substantially equal to the diameter of the pins 29. The reason for this will presently appear.

Let it be observed from Figures 4 and 6, that as the web of paper approaches the lower positioning roll 8, the pins 29, 29 are coming up from'below and enter the perforations at some point between their ends. At the same instant, the gripping face 33 of the upper cutting roll 11 has engaged the advancing web, while the cuttin blade 32 is coming downwardly and is a out to severthe web. Hence, in this position the portion of the web between these sets of rolls is placed under tension by the positioning rolls holding back at the cuttin roll into a separate Wrapper (as shown in igure 8) which has already advanced to the feed belt A and is immediately carried to the wrapping machine. What occurs to the web between the two sets of rolls is important: At the instant the cut is made, the forward end of thecontinuous web is released (since the gripping face 33 is beyond the blade). At the same instant, the upper positioning roll 9 islifted upwardly and out'of contact with the web by the eccentric sectors 30a of the cams 30, momentarily releasing the webs (Figure 7). Thus released, the web is free to slip backwardly the distance permitted by the pins 29, :29 which at the instance prior to release are engaging the perforations F, F rearwardly of their forward ends. The weight of the tensioning rod 7 on the web causes the web to slip backwardly until contact is made between the pins and the forward ends of the slots or perforations,

. whereupon the upper positioning roll is released from elevated position and again becomes active in feeding the web forwardly, and the pins leave the perforations and continue on through another revolution to engage the following pair of perforations F, F (Figure 4) in the advancing web.

It may be well to point out again the factors which contribute to the backward slippage of the web after each cutting operation. In the first place, it has hereinbefore been pointed out that the lower feed roll 5 is just a fraction of an inch (one-tenth) less in diameter than the lower'positioning roll 8., v Thus it follows that since these two rolls are driven atthe same rotative speed, the web is normally fed from the feed rolls slightly slower than it is picked up by the positioning rolls,

but since there is a backward slippage with each revolution of the positioning rolls, the

slightly reduced forward feed is offset by the backward slippage, with the result that the required slack between the two'sets of rolls is maintained. In the second place, the difference inv the distance between pairs of perforationsin the web of paper and the circumference of the lower positioningroll is responsible for the fact that the pins 29-, :29 enter each pair of perforations at a point intermediate their ends, although they leave the perforations from the forward or leading ends the paper having meanwhile slipped backwardly when released by the positioning rollsas already described.

Thus it will be seen that although the feeding and cutting of the web into wrappers is a continuous operation, a distinct intermittent positioning or adjusting operation is carried on simultaneously but with such rapidity as not to affect the continuous advance of the web. This positioning operation, therefore,

. consists in defining the line along which each individual wrapper is to be cut before it. is fed to the cutter; and this is so because the pairs of perforations is necessarily very minute, but nevertheless, the error however slight multiplies very rapidly so that unless the Web is adjusted just before each wrapper is cut, the error would soon be manifested in a steadily advancing or receding line of cutting, which would result in the production of wrappers with their cut edges passing .through theprinted panels and thusdestroying any possibility of registering the panels with the faces of the cartons It follows, therefore, that any discrepancy or inequality in the paper is taken up or absorbed by the backward slippage of the web as it is released by the positioning rolls, 'so that no matter how minute the error may be, the wrapper about to be cut off is automatically started from the same line just ahead of the cutting.

rolls. As a result, therefore, each wrapper discharged into the wrapping machine has its printed ,matter symmetrically arranged thereon, as shown in Figure 8, and consequently the carton about which the wrapper is folded and sealed bears the several panels in perfect register with its top, side and end faces.

Having set forth a machine embodying the features of our invention, we-claim:

1. A machine for cutting a continuous web of papeninto sheets comprising a rotary cutter, a pair of rolls in advance of said cutter and acting to feed said web to said cutter, said web having longitudinally elongated marginal slots definitely located with respect to predetermined lines along which the sheets-are to be cut, one of said rolls being provided with pins adapted to engage said slots during each revolution of said roll, and means for momentarily separating said rolls while each slot is engaged by said pins to permit the web to shift rearwardly to bring the forward end of the slots against said pins.

2. A machine for cutting a continuous slots whereby said pin enters each slot rearslot is engaged by said pin to permit'the web,

to be shifted-rearwardly to bring the forward end' of each slot against said pin.

3. A machine for cutting a continuous Web of paper into sheets comprising a pair of cutting rolls, a pair of driven rolls between which the web passes in advancing toward said cutting rolls, said web having elongated marginal slots having their positions fixed with respect to predetermined lines of cut ting, pins projecting from one of said rolls and adapted to enter successive slots rearwardly of their forward ends as the web approaches said rolls, and means for momentarily releasing said web by said rolls after each sheet is cut whereby t'he'same slips backwardly bringing the forward ends of said slots in contact with said pins as the next sheet to be cut is advanced to said cutting rolls.

4:. A machine for cutting a continuous web of paper into sheets comprising a rotary cutter, apair of driven rolls between which the web passes in advancing toward said outter, said web having longitudinally elongated slots ,spaced apart at distances equal to the length of the sheets to be cut and having their positions fixed with respect to predetermined lines of cutting, pins projecting from one of said rolls and adapted to enter successive slots rearwardly of their forward ends as the web approaches said rolls, means 7 for tightening the portion of the web between said rolls and said cutter before each sheet iscut,and means for separating said rolls after each sheet is cut whereby the web is released and permitted to slip rearwardly to bring the forward ends of said slots in contact with said pins.

' 5. A machine for cutting a continuous web of paper into sheets comprising a rotary cutte'r,a pair of driven rolls in advance of said cutter, means for feeding the web between said rolls and thence in the path of said cutter, said web having pairs of longitudinally elongated marginal perforations each bearing a fixed position relative to a predetermined line of cutting, a pair of pins projecting from one of said rolls and adapted to. engage successive pairs of perforations rearwardly of their forward ends as the web comes in contact with said rolls, means associated with said butter. for gripping said web ahead ofthe line of cutting totension the portion of said web intermediate the same and said rolls, and means for separating said rolls as the tension is relieved by the cutting of successive sheets from the web to effect the backward slipping of the webto bring the forward ends of each pair of slots in contact with the pins before the next sheet is out. p

memes 6. A machine for cutting a continuous web of paper into sheets comprising a pair vof cutting rolls, a rotary cutter, a pair of positioning rolls in advance of said cutter, means for feeding the web between said rolls and thence between said cutting rolls, said web having pairs of longitudinally elongated marginal perforations each bearing a fixed position relative to a predetermined line of 7 cutting, a pair of pins projecting from one of said rolls and adapted to, engage successive pairs of perforations intermediate their immediately after the tension is relieved by the cutting of the web to eflect the backward slipping ofthe web to bring the forward ends of each pair of slots in contact with the pins before the next sheet is cut.

7. A machine for cutting a' continuous web of paper into sheets comprising a rotative cutting blade, a pair of drlven rolls adapted to advance the web into the path of said cutting blade, one of said rolls having a pin adjacent each end adaptedto register with longitudinally elongated slots in. said web, said slots'being definitely positioned with respect to the lines along which the sheets are to be cut, said last mentioned roll havinga diameter such that said pins enter the slots in the approaching web intermediate their ends, the other of said rolls being movable to and from said first mentioned roll, and means for shifting said last mentioned roll to permit said web to slip backwardly after each sheet is cut to permit the cutting line of each succeeding sheet to be defined by the engagement of the pins-with the forward edge of said slots.

8. A machine for cutting a continuous web of paper into'sheets comprising a rotative cutter, a pair of driven rolls adapted to advance the web into the path of said cutter, one of said rolls having a pin adjacent eachend adapted to register with longitudinally elongated slots in said web, the-forward ends of said slots being definitely positioned with respect to the lines along which the sheets are to be cut, said last mentioned roll having a diameter such that said pins enter the slots in the approaching web intermediate their ends, the other of said rolls bein movable to of paper into sheets, comprising a rotary cut ter, a pair of positioning rolls in advance of said cutter, means for driving said cutter and positioning rolls at the same speed, one of said positioning rolls having radially projecting 1 pins adapted to register with elongated slots first mentioned roll to shift said last men-,

tionedroll while the slots in said web are in register with said pins to permit sufficient slippage of the web after each sheet is cut to bring said pinsto the forward ends of said slots.

10. A machine forcutting a continuous web of paper into sheets along lines between printed impressions on said web, comprising a cutter, a pair of feed rolls in advance of said cutter, a pair of positioning rolls between said feed rolls and said cutter, means for driving said cutter, feed and positioning rolls at auniform speed, means for applying a backward pull on said web as it approaches said positioning rolls, the latter normally acting to positively advance the web to said cutter, one of said positioning rolls having pins projecting from its surface and adapted to register with elongated slots in said web bearing a definite position relative to each printed impression thereon, said positioning rolls being operative to release said web while said pins are in register with successive slots to permit a limited slippage in the Web suflicient to bring said pins to the forward ends of said slots andto thereafter feed the web forwardly to said cutter.

11. A machine for cutting a continuous web of wrapping material into sheets along predetermined lines of cutting, comprising a cutter, means for continuously advancing.

said web to said cutter including a pair of driven rolls, one of the same having pins adapted to engage slots formed in said web and bearing a fixed relation to the lines of cutting, said pins having wedge-shaped forward edges and said slots having V-shaped forward ends, and means for actuating said rolls to release said web while said pins are engaging said slots to effect the rearward slippage of said web before each sheet is cut to bringsaid pins into register with the forward ends of said slot.

12. A machine for cutting a continuous web. of wrapping material into sheets along predetermined lines of cutting comprising a cutter, means for continuously advancing said web to said cutter including a pair of driven rolls, one of the-same having pins adapted to engage slots formed in said web and bearing a fixed relation to the lines of cutting, said pins being shaped to presenta V-shaped edge facingin the direction of rotation of said rolls and adapted to engage longitudinally elongated slots formed in said web, and having their forward ends cut in V- shape, said slots being spaced apart a distance such that said pins enter the same intermediate its ends as the web approaches said rolls, and means for efiecting the momentary release of, said web by said rolls, whereby the same slips backward to bring said pins into contact with the forward ends of said slots, and to simultaneously shift the web transversely to center the pins relative to said slots.

13. A machine for cutting a continuous web of wrapping material into sheets along transverse lines of cutting, comprising a cutter, rolls for feeding said web to said cutter, means operative to efiect the release of said web by said rolls in advance of each cutting operation, and means operative during the separation of said rolls to position said web relative to said rolls, whereby said web will be out along a predetermined line.

14. A machine for cutting a continuous web of wrapping material'into sheets along transverse cutting lines comprising an intermittently operating cutter, driven rolls for feeding the web to said cutter, means for separating said rolls to permit said web to shift longitudinally after each cutting operation, and means for limiting the shifting of said web during the separation of said rolls to position said web for cutting along a predetermined line as it is advanced to said cutter.

15. A machine for cutting a continuous web of wrapping material into sheets along transverse cutting lines comprising a rotary cutter, rolls for feeding the web to said cutter, means for separating said rolls in advance of each cutting operation to permit longitudinal displacement of said web, and means on one of said rolls and engaging said web whereby said web is positioned for cut-- ting along a predetermined line before it isfed to said cutter.

16. A machine for cutting a continuous web of paper transversely into sheets along predetermined lines of cutting, comprising a cutter, means for advancing the web to said cutter including a pair of driven rolls, said web having slots therein bearing a fixed relation to the predetermined lines of cutting, a pin carried by said rolls and adapted to engage the slots" in said web, and means acting to separate said rolls in advance of each cutting operation to effect the longitudinal displacement of said web permitted by the engagement of a slot by said pm.

17. A machine for cutting a continuous web of paper transversely into sheets along predetermined lines of cutting, comprising a cutter, means for advancing the web to said cutter including a pair of driven rolls, said web having slots therein bearing a fixed relation to the predetermined lines of cutting, a projection on one of said rolls adapted to enmemee gage successive slots in the advancing web, and means acting to momentarily separate said rolls to effect the release of said web during the period of engagement of said projection with each slot and the rearward displacement thereof as limited by the contact of the forward edge of each slot with said projection.

Signed 'at Chicago, this 28 day of Jan,

WILLET 1B. RANNEY. ARTHUR E. JOHNSUN. 

